✌️ Rule of 72 Calculator
Years to double your money
9 years
at 8% a year (Rule of 72)
| Rule of 72 | 9 years |
| Rule of 69.3 | 8.7 years |
| Exact (compound formula) | 9 years |
- Triples in about
- 14.3 years
- Grows 10× in about
- 29.9 years
Years to double your money
9 years
at 8% a year (Rule of 72)
| Rule of 72 | 9 years |
| Rule of 69.3 | 8.7 years |
| Exact (compound formula) | 9 years |